TABLE 2.

Dialogue scenario used in experimental pattern Pref+/Cha-. The Japanese utterances were directly translated by DeepL.

UID	ET	Utterance
S1	1	Welcome to our shop. Is it correct that the reason for your visit is to decide on a travel destination?
C1		Yes, that is correct. I am here to decide where to travel.
S2		Yes, I understand. I would like to ask you a few questions. Which of your trips to Osaka was the most memorable for you?
C2		Yes, the trip to Atami was memorable.
S3		Atami…. It is a very nice spot, is not it? I am sure you have various memories of that trip, such as the food and scenery, but what would you say was your most memorable moment?
C3	2	Yes, the most memorable memory is taking a bath in the hot springs.
S4		Hot springs in Atami are very famous. I think it is a very good memory. Did you buy any sweets as souvenirs on that trip? Sweet snacks?
C4		Yes, I bought Atami pudding as a souvenir.
S5		I see …. You must have bought at least one type of sweet snack as a souvenir …. Are you the type of person who keeps a budget for your trips?
C5		No, I try to keep my travel budget as low as possible.
S6		That’s right …. You want to enjoy your trip inexpensively.
S7	3	I’m sorry, I’ve rambled on a bit too long. I, Ai, will be in charge of our guests today.
S8	4	Let’s decide on the destination of your trip. Since you mentioned that you have fond memories of hot springs from your past trips, I would like to narrow down the list to places with baths, spas, and salons. What do you think?
C6	5	It is a great idea to choose from places with bath/spa/salon spots.
S9		Yes, sir. We have Tokyo, Hokkaido, and Osaka as destinations where we offer bath/spa/salon spots. Since you said you are a budget-conscious type of person, I would have preferred Tokyo, but I would like to recommend Hokkaido as a destination that does not compromise on budget. What do you think?
C7	6	Thank you for recommending Hokkaido. Hokkaido is also a wonderful option if we consider it under the condition that we do not compromise on the budget.
S10		I understand. This time, I would like to recommend to you the Hotel Furukawa in Hokkaido. It is the most popular place for a one-day trip to a hot spring. How do you like it?
C8	7	So, the Nukumori-no-Yado Furukawa in Hokkaido is a popular day-trip hot spring spot. That’s interesting.
S11		Thank you very much. The other reason why we recommended Hokkaido is because we would like you to purchase Shiroi Koibito, a sweet confectionery, as a souvenir. This is a popular product in Hokkaido, and we recommend it to customers who often buy sweet snacks as souvenirs. Thank you for visiting us today. We look forward to serving you again.